Sandy King wrote
> So the question remains, why do Sam's gum, which use such a low
> percentage of dichromate (about 3%) in the coating, print with so
> much speed, while others need saturated solutions of 10X the amount
> of dichromate. I could be wrong but I think there is really some
> dramatic difference in technic rather than an accumulation of little
> differences.
>
The one big variable I haven't heard mentioned in this discussion is that
Sam is printing on unsized paper so his gum has a far greater grip on the
paper than a print on sized paper would have. Are those of you who have been
trying to use a weaker sensitizer done it one sized or unsized paper? I can
imagine that there may be more need for stronger bichromate on sized paper.
Jack
Received on Mon Dec 1 15:47:09 2003
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